A css1 file extension is commonly used for text files that contain Cascading Style Sheets data, which are used on websites and define graphic layout and look of webpages.

Detailed description

Software that open css1 file

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CSS1 file extension - Cascading Style Sheet

What is css1 file? How to open css1 files?

File type specification:

Internet related file type icon Internet related file type

The css1 file extension is sometimes used for Cascading Style Sheet.

The css1 file contains customized, global properties and other information about how to display HTML elements. It can define the size, background, colors, fonts, line spacing, indentation, borders, formats and location of HTML elements.

see also the CSS file extension.

Updated: April 7, 2024

The default software associated to open css1 file:

Adobe Dreamweaver icon

Adobe Systems Incorporated logoAdobe Dreamweaver  Microsoft Windows software

Company or developer:
Adobe Systems Incorporated

Adobe Dreamweaver is a professional-level web authoring and editing program that has both visual and code-level capabilities for creating standards-based websites and designs for both desktop and mobile platforms. The latest version, Dreamweaver CC is available as part of Adobe Creative Cloud.

Help how to open:

Use any suitable text editor or development suite to open or edit the *.css1 files. You can also view the *.css1 files with any modern internet browser.

How to convert:

You can convert HTML files to CSS1 with the use of some SEO tools available on the Internet.

List of software applications associated to the .css1 file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open css1 file, edit css1 file, convert css1 file, view css1 file, play css1 file etc. (if exist software for corresponding action in File-Extensions.org's database).

Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting css1 files.

Software that open css1 file - Cascading Style Sheet

Programs supporting the exension css1 on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for open css1 file action.

Microsoft Windows:

Main software associated with css1 file by default:
Adobe Dreamweaver small icon Adobe Dreamweaver
Other suggested software:
NotePad++ text editor small icon NotePad++ text editor
PSPad small icon PSPad
Sublime Text small icon Sublime Text

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